Digital color image capture and processing module

• US 7,886,972 B2
• Filed: 10/31/2007
• Issued: 02/15/2011
• Est. Priority Date: 01/17/2007
• Status: Active Grant

• Current Assignee: Fedex Corporate Services Incorporated (FedEx Corporation), Metrologic Instruments Incorporated (Honeywell International Inc.)
• Original Assignee: Fedex Corporate Services Incorporated (FedEx Corporation), Metrologic Instruments Incorporated (Honeywell International Inc.)
• Inventors: Zhu, Xiaoxun, Skaaksrud, Ole-Petter, Gordon, Wayne Luke, Smith, Jeffrey Robert, Dryden, Cameron Dee, Rhodes, Robert Russell Jr.
• Primary Examiner(s): Kim; Ahshik
• Application Number:
  US11/981,718
• Publication Number:
  US 20080173710A1
• Time in Patent Office: 1,203 Days
• Field of Search: 235/462.24, 235/462.42, 235/462.43, 235/384
• US Class Current: 235/384
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management

Abstract

A digital image capture and processing module for use with an Internet-based shipping, tracking and delivery network. The module includes a housing having a light transmission aperture with an optically transparent imaging window mounted thereover. A digital camera board supports an area-type color image sensing array, sensing array control electronics, and image capture and buffering electronics. An imaging lens assembly supported within said housing and having image forming optics with a field of view (FOV) on the area-type color image sensing array. A plurality of broad-band LEDs are supported within said housing for producing a field of broad-band illumination. A light focusing reflector is operably mounted for focusing the field of broad-band illumination. A digital image-processing subsystem supports image capture, processing and display functions, as well as digital image file transmission functions within the module. A system control subsystem controls and/or orchestrates the operation of components within the module; and a plurality of mode selection buttons are provided on the housing so that, upon depression, control signals are generated and are to the system control subsystem.

Claims

1. A digital color image capture and processing module comprising:

a housing having a light transmission aperture with an optically transparent imaging window mounted over said light transmission aperture;

at least one digital camera board mounted within said housing, and supporting an area-type color image sensing array, sensing array control electronics, and image capture and buffering electronics;

an imaging lens assembly supported within said housing and having image forming optics with a field of view (FOV) on said area-type color image sensing array;

a plurality of broad-band LEDs supported within said housing for producing a field of broad-band illumination;

a light focusing reflector operably mounted for focusing said field of broad-band illumination into and over the FOV of said area-type color image sensing array;

LED driver circuitry disposed in said housing for driving said plurality of broad-band LEDs in response to control signals;

a digital image-processing subsystem for processing digital color images produced by said at least one digital camera board;

a system control subsystem for controlling and/or orchestrating the operation of components within said digital color image capture and processing module; and

a plurality of mode selection buttons integrated with said housing so that, upon depression, control signals are generated and transmitted to said system control subsystem.

2. The digital color image capture and processing module of claim 1, wherein said digital image-processing subsystem and said system control subsystem are implemented using a microprocessor, program memory and non-volatile memory, for supporting an operating system (OS) and running one or more client application programs.

3. The digital color image capture and processing module of claim 2, wherein the function of one or more client application programs is to support (i) e-mail and other electronic messaging services on an Internet-based shipping, tracking and delivery network, (ii) client-side digital image capture and processing functions, and digital image file transmission functions, as well as (iii) the client-server based information services supported on said Internet-based shipping, tracking and delivery network.

4. The digital color image capture and processing module of claim 1, wherein said plurality of mode selection buttons comprises a first button and a second button, wherein depressing said first button automatically causes said module to perform a first set of client-side operations, and wherein depressing said second button automatically causes said module to perform a second set of client-side operations.

5. The digital color image capture and processing module of claim 4, wherein said first set of client-side operations include one or more operations selected from the group consisting of:

(i) generating one or more digital images of a shipping document;

(ii) forwarding said one or more digital images to said digital image-processing subsystem for automated reading/recognition of bar-coded shipping tracking number graphically represented in said one or more digital images; and

(iii) automatically encoding, as tags, within the header of digital image files of said one or more digital images, the bar-coded shipping tracking number recognized by said digital image-processing subsystem; and

(iv) automatically naming or titling the digital image files using said one or more machine-recognized bar-coded shipment tracking numbers.

6. The digital color image capture and processing module of claim 5, wherein said second set of client-side operations include one or more operations selected from the group consisting of:

(i) digitally imaging the shipping document, (ii) reading any 1D and/or 2D bar-coded shipment tracking number graphically represented therein, and (iii) generating digital image files having names or titles encoded with said bar-coded shipment tracking number.

7. The digital color image capture and processing module of claim 5, wherein when depressing said second button causes digital images to be named, titled or indexed based on the bar-coded symbol(s) read in the previously captured digital image in response to depressing said first button.

8. The digital color image capture and processing module of claim 4, wherein said two-button operation allows imaging of correlated multi-page shipping documents.

9. The digital color image capture and processing module of claim 1, wherein the depth-of-focus (DOF) of said image forming optics accommodates the digital imaging of (i) single flat shipping documents, (i) a shipping document atop of stack of shipping documents, (iii) a shipping document on a clipboard, as well as (iv) curled shipping documents, and (v) any combination of the above.

10. The digital color image capture and processing module of claim 1, which further comprises an application program for performing a multi-stage color/BW image conversion method, wherein, each unprocessed color digital image produced by said area-type color image sensing array, is first converted into a black and while (BW) or monochrome digital image using a color-to-monochrome blurring function;

and then the monochrome digital image is converted into a sharp monochrome (BW) digital image using an edge sharpening function.

11. The digital color image capture and processing module of claim 3, which is programmed to generated multiple digital images of each captured shipping document, and wherein each digital image has a different image output resolution for meeting the requirements of different purposes and applications on said Internet-based shipping, tracking and delivery network.

12. The digital color image capture and processing module of claim 11, wherein said multiple digital images comprises:

(1) a low-resolution color digital image of the shipping document for display on a touch-screen of system embodying said digital image capture and processing module, or other client machines throughout said Internet-based shipping, tracking and delivery network;

(2) an intermediate-resolution color digital for helping the courier to quickly validate or invalidate a captured image of a shipping document at the point of pickup;

(3) a high-resolution color digital image of the shipping document for review by the courier at the point of pickup, as well as by human data-keying operators on said Internet-based shipping, tracking and delivery network, who can zoom in on image features and the like as required; and

(4) high-resolution sharpened monochromatic (BW) digital image of the shipping document, converted from the high-resolution color digital image thereof, for use by client-side and server-side machine-implemented symbol, form and character recognition processes.

13. The digital color image capture and processing module of claim 1, wherein a plurality of LED indicators are mounted on the top of said housing so as to visually indicate the various scanning modes of said digital image capture and processing module, its operation, and memory-full warnings.

14. The digital color image capture and processing module of claim 4, which further comprises a document support tray and:

(i) a single-page document scan mode for imaging a single page document; and

(ii) a multi-page document scan mode, for imaging documents which require multiple page scans.

15. The digital color image capture and processing module of claim 1 which further comprise a document support tray accommodates standard 8.5″

×

11″

paper.

16. The digital color image capture and processing module of claim 15, wherein said document support tray includes a lip around the tray perimeter so as to help maintain documents in place during imaging operations.

17. The digital color image capture and processing module of claim 15, wherein said document support tray folds up when not being used, and folds down to a slightly tilted position for imaging documents.

18. The digital color image capture and processing module of claim 15, wherein when configured in an operational mode, said optically transparent imaging window is mounted parallel to said document support tray for uniform imaging.

19. The digital color image capture and processing module of claim 18, wherein said document support tray includes tray hinges having detents in the 0-degree (folded up) position for storage, 90-degree (horizontal) position for scanning, and 180-degree (folded down and away from the camera) positions for storage, providing a break-away feature for driver safety.

20. The digital color image capture and processing module of claim 14, wherein during said single-page document scan mode, the following operations are performed by the courier:

(1) place the single page shipping document in said document support tray; and

(2) press said first button on the housing, automatically causing the single-page shipping document to be digitally imaged, and multiple color digital images generated at different resolutions.

21. The digital color image capture and processing module of claim 12, wherein said high-resolution color image is processed to achieve color/BW conversion, and generating said high-resolution monochromatic (BW) image.

22. The digital color image capture and processing module of claim 12, wherein said high-resolution sharpened BW image is processed by said imaging-based bar code reading engine to read one or more bar-coded shipment tracking numbers and/or other identifiers in said digital image.

23. The digital color image capture and processing module of claim 1, wherein said digital image files are named or titled using read shipment tracking number and then buffered in persistent memory, for subsequent retrieval.

24. The digital color image capture and processing module of claim 23, wherein said stored digital image files can be uploaded to a Web-enabled mobile data collection and communication terminal.

25. The digital color image capture and processing module of claim 14, wherein during the multi-page document scan mode, the following operations are performed:

(1) place shipping document page bearing a bar-coded shipment tracking number, within said document support tray;

(2) press said first button on the housing;

(3) then place second page of the shipping document in said document support tray;

(4) press said second button on the housing;

(5) repeat steps (3) and (4) as needed to image and format all pages of the multi-page shipping document, thereby automatically reading the bar code(s) shipment tracking number on the first page of said shipping document, and naming the image file therewith, then buffered in persistent memory.

26. The digital color image capture and processing module of claim 14, wherein all pages imaged using said second button are indexed to the first imaged page of said multi-page shipping document.

27. The digital color image capture and processing module of claim 1, wherein audio and visual notification is given so as to validate correct capture of said one or more digital images.

28. The digital color image capture and processing module of claim 1, wherein digital image files are stored in persistent memory for subsequent retrieval, and uploaded in the background to a Web-enabled mobile data collection and communication terminal.